The dissertation studied the inverter sinusoidal wave form, Single Phase variation power DC to AC inverter current sinusoidal wave distribution and general electric capacity high inappropriate to use with small load Therefore, the design and construction of sinusoidal inverter 220V 50Hz coordinates are 100 watts. By using the techniques to create the inverter square wave increased pressure from battery size 12V as ฟ้ากระแสสลับ square wave high pressure. Through the circuit character of fire to the high voltage direct current techniques for creating PWM sinusoidal inverter, the switching frequency 3KHz. Through the circuit filter frequency Low Pass Filter to obtain pure sine wave, the wave shape And tested by to use with load to see the characteristics of wave shape and the efficiency of the inverter output voltage 110V. The loads on the effective response to sinusoidal and efficiency as the best load resistance 72.8% load effectively 62.6% diode load harmonics (Non-linear) and effective 63.9% low efficiency, a dozen inductance 59.8% so capable of inverter sinusoidal wave voltage 100 watts maximum 110V best performance when used with a resistive load.
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